JPH01101593A - Electronic musical instrument - Google Patents

Abstract

PURPOSE: To enable a user to prepare a method for synthesizing a musical sound by independently inputting and specifying the operation modes of plural time-divided waveform generation modules in a sound source. CONSTITUTION: An input means 2a inputs module mode specification information for independently specifying the operation modes of respective waveform generation modules to be time-dividedly driven and a processing means 3 converts the inputted module mode specification information into control information for individual waveform modules and transfers the information to a sound source. Therefore a user independently inputs the module mode specification information for specifying the operation mode of each waveform generation module. Consequently a method for synthesizing a musical sound in the sound source is specified by an easily understandable input format.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to electronic musical instruments, and more particularly to technology for specifying how musical tones are synthesized in a sound source.

[Background] Electronic musical instruments equipped with sound sources that synthesize musical tones using multiple waveform generation modules are already known. The plurality of waveform generation modules described above can be connected in various ways, and the overall connection structure specifies how musical tones are synthesized. In the case of the conventional technology, by assigning a numerical value to each of N predetermined ways of synthesizing musical tones and selecting the numerical value using an input device, the method of synthesizing musical tones (the connection structure of multiple waveform generation modules) can be determined. It is specified. If there are many options in this input format, it becomes difficult for the user to understand which numerical value corresponds to which musical tone synthesis method. Therefore, the types of musical sound synthesis that the user can select must be limited to a certain number, which may result in insufficient use of the musical sound synthesis ability of the sound source itself. Even though the musical sound synthesis algorithm can be executed by the sound source, it is not available to the user.

[Objective of the Invention] Therefore, the object of the present invention is to provide an electronic musical instrument that can specify the method of musical tone synthesis of a sound source using an easy-to-understand input format: [Key points of JA Ming] This invention achieves the above object. Therefore, an input means is provided for inputting module mode specification information that independently specifies the operation mode of each waveform generation module that operates in a time-sharing manner, and this input module mode specification information is used to control each waveform module by a processing means. It is characterized by converting it into information and transmitting it to the sound source.

[Operation and Development of the Invention J According to the present invention, the user can independently input module mode designation information that designates the operation mode of each waveform generation module using the input means. That is,
The method of musical tone synthesis in the sound source (the overall connection structure of the plurality of time-division waveform generation modules) is specified by the user in an assembly method. All the user has to do is to inform the electronic musical instrument of the connection structure of the plurality of waveform generation modules that he or she has in mind through the input means. Therefore, the user always understands what the selected musical tone synthesis method is, and there is no need to check the correspondence between numerical values and musical tone synthesis methods, as in the past.

In a preferred configuration example, two successive waveform generation modules are assembled as a unit of assembly by either (a) adding the output of the previous module to the output of the subsequent module, or (0) adding the output of the subsequent module. Either phase input or (
C) Select whether to use it as part of the envelope input of the subsequent module 0 For example, if the sound source consists of eight time-division waveform generation modules, the user can store two consecutive waveform generation modules in one head. Draw four lines with 1 line as one line, and decide in what form the two modules included in each line should be connected. Now you have a connection structure in your head of eight waveform generation modules that shows how musical tones are synthesized.

All that's left to do is transfer this to the electronic instrument.

For example, if module O and module I of the first line are to be connected in phase, the first line is selected using the input device, and the line operation mode is selected as "phase". Thereafter, in the same manner, the input is completed when the mode of the remaining line is selected with 0 or more. The processing means generates control information for each module from the input information and transfers it to the sound source.

When a musical performance input is received, the sound source executes musical tone synthesis defined by the transferred control information in accordance with a sound generation command from the processing means.

[Embodiment 1] An embodiment of the present invention will be described below with reference to one drawing. FIG. 1 is a functional diagram of an electronic musical instrument according to an embodiment. The states of the key gil and the switch section 2a are monitored by the CPU 3, and the CPU 3 displays data related to the selected tone, edit, etc. on the 0 display section 2b where key press/release, tone selection, etc. are detected. . In order to control the sound source LSI 6, the CPU 3 generates necessary data using the ROM 4, RAM, etc., and transfers it to the sound source LSI 6. Sound source LS
I5 generates musical tones using the external RAM 7 as a calculation buffer. The generated musical tone is converted into an analog signal by a DAC (digital-to-analog converter), amplified by an amplifier 9, and emitted by a speaker 10.

In this example, the sound source LSI 6 has an 8-channel configuration with 8 modules per channel. The interface/control unit 11 is a circuit that interfaces the CPU 3 and the sound source LSI 6, and generates timing signals used in each part of the sound source LSI 6, decodes the type of data transferred from the CPU 3, and transmits the data via the external RAM interface 16. Envelope/written to external RAM7
The key code generation circuit is external RAM interface 1
6, and generates an envelope and key code to be sent to the index conversion/phase angle generation circuit 13 in an internal arithmetic circuit (not shown). The exponential conversion/phase angle generation circuit 13 performs exponential conversion on the sent envelope and key code, and generates phase angle data by accumulating the exponentially converted key codes (phase difference values). The sampling period of the envelope data and key code calculated by the envelope/key code' generation circuit 12 is relatively slow because it uses the external RAM 7, whereas the sampling period of the musical waveform in the waveform generation circuit 15 is fast. Therefore, the speed conversion for this purpose is also performed using the internal buffer (
(not shown). As a result, the index conversion/phase angle generation circuit 13 supplies phase angle data and envelope data to the waveform generation circuit 15 for each channel and module time synchronized with the waveform generation circuit 15. The bC register 14 includes a memory that stores information (operation code) for controlling the operation of the waveform circuit 6 on a channel-by-channel and module-by-module basis.
The contents of memory are updated via . bC register 14 is a waveform circuit! The operation code corresponding to each channel and module time synchronized with 5 is read from the internal memory and supplied to the waveform generation circuit 15. The waveform generation circuit 15 selectively uses the time division envelope data and phase angle data given from the index conversion/phase angle generation circuit 13 in accordance with the time division operation code for each channel and module given from the QC register 14. , generate various musical tones.

FIG. 3 shows the configuration of the waveform generation circuit 15, and the part surrounded by a broken line is the waveform module 15M.

The time-division envelope data given from the index conversion/phase angle generation circuit 13 for each channel and module time is shown as E1, and the phase angle data is shown as ωt. OC register 1
4, the state of each selection circuit XS, ES, TS, 3317) in the waveform module 15M is controlled by the operation code given for each channel and module time.
t, xS indicates a phase angle selection circuit used in the waveform module 15M.The phase angle selection circuit xS, according to the operation code, (a) phase angle data generated by the exponential conversion/phase angle generation circuit 13; , (b) Waveform output of the previous module W-1° (c)
Output R1(d) of tempo register 15-3 (b) and (
C) Select either the sum or difference.

ES is an envelope selection circuit; (a) When bit 3 of operation code OC is O, envelope data E generated by index conversion/phase angle generation circuit 13; (b) When bit 3 of operation code OC is 1, this envelope data E is generated. Temporary register 15- for envelope data E
The past waveform output from 3 or the cumulative waveform R' is selected.

FD is a phase distortion/noise selection circuit, (a) when bits 2 to 0 of the operation code OC are 0, there is no phase distortion, (b) when bits 1 to 5 are 5 stages of phase distortion, (c) 6 When white noise.

(d) Multiplication of white noise and sine wave when 7; Select as follows.

Now, assuming that there is no phase distortion, the waveform module 15M transfers the phase selected by the phase angle selection circuit xS to the SlNROM.
The output of the 0 multiplier which converts it into a sine wave in 15-1 and multiplies it by the envelope selected by the envelope selection circuit ES in the multiplier 15-2 is the output W of the waveform module 15M.

TS is a circuit that selects the input of the temporary register 15-3, and according to the operating code, (a) Waveform output W of the current module (b) Output R of the temporary register (c) The combination of (a) and (b) Choose between sum or difference.

SS is an accumulator 15 that accumulates musical waveforms to be output to the DAC 8.
This is a circuit that selects the input to -4, and the accumulator input is (a) the waveform W of the current module added to or subtracted from the accumulated waveform, or (b) the accumulated waveform (no change). That is, the accumulator input selection circuit SS selects whether or not the waveform W of the current module is to be part of the musical tone to be output by the waveform generation circuit 15.

FIG. 4 shows the relationship between the operation code and the operation of the waveform module 15M. The subscript i in the diagram represents the i-th module. For example, the operation 1 code dC is 0X (
(hexadecimal), the input to the accumulator 15-4 is the sum of the waveform Wl-1 of the previous module to the accumulated waveform Σ up to that point, and the phase angle Xi of the current module is obtained by exponential transformation. /phase data ωi generated by the phase angle generation circuit 13
t is selected.

The present invention relates to a technique for specifying the operation mode of each waveform module via an input device for a sound source having a plurality of time-division waveform modules, such as the waveform generation circuit 15 described above. Two aspects will be described below as examples.

In aspect 1, there are 3 combinations of two modules, which can be specified from the input device, including addition 1 phase and ring modulation. module i
The output waveform of! When expressed as 1g1nω1ti.

In addition, E1sinω+t+! 1.1 sin ωi, +t is obtained and in one phase, the output waveform of module i is module i+
1, so it becomes El -H5in (E+ s + nta t t), and in ring modulation, the output wave ' shape of module i is the module t + t generated by the index conversion/phase angle generation circuit 13.
It is added to the envelope IEi-1 and becomes the envelope used by the waveform module.

(E+, ++Etsin ω+t) sin ωt◆+t is obtained.

An example of an input device for specifying the above three combinations is shown in FIG. If we count one module as one and call it a line, there are a total of four lines. Yes, but
In the following explanation, one channel will be used for convenience of explanation)0
The numbers 0 to 3 shown on the left side of the screen of display unit 2b-1 indicate line numbers.For example, line 0 is a combination of module 0 and module jbt. displayed next to it. Select a line using the cursor key 2a-1 and select the relationship between the two modules (addition, phase, ring change jl) using the value key 2a-2. ADD shown on the screen of the 0 display section 2b-1 selects addition. PHASE is the phase, RING
0 represents ring modulation. For example, module 0 and module l are combined by addition. Note that the display section 2b-1 is the display section 2b in FIG.
The keys 2a-1 and 2a-2 are part of the switch section 2.
It is part of a.

FIG. 6 is a conceptual diagram when the eight time division modules included in the waveform generation circuit 15 are considered as four sets (four lines) of arithmetic circuits Lo-L3.

FIG. 7 shows the performance circuit Lo of line 0. For explanation of this aspect 1, the waveform generation circuit 1 described in FIG.
For example, 15-
1o is SlNROM 15-1 in module 0, 15-1. is SlNROM1 in module l
5-1, the output of Eo is the envelope generated by the index conversion/phase angle generation circuit 13 (i21ffl) in module 0, and the output of El is the envelope generated by the same circuit 13 in module l. The same applies to the calculation circuits L1 to L3 of other lines.Three selection switches SWI to SW3 in Figure 6 allow the relationship between module 0 and module l to be set to the above-mentioned "addition,""phase," and "ring modulation." You can switch to either one.

FIG. 8 shows the correspondence between two operation codes (operation codes 0CO1OC1 of modules 0 and 1) and the selection switches SWI to SW3 of FIG. 7. OCO and bCl in the first line combine two modules by addition, 75CO and 75C1 in the second line use the output of the previous module as the phase of the current module, and oco' in the third line OCI is a case of ring modulation.

FIG. 9 shows waveform synthesis designation registers MD01, MD23, MD45, Mn set by the input device shown in FIG.
It is B2. These registers are located in RAM 5 of FIG. The lower two bits of each designated register define the relationship between the two modules. The CPU 3 in FIG. 1 generates each operation code from the contents of each designated register and outputs the '?' of the sound source LSI 6. Transfer to 5C register 14.

FIG. 1θ shows a flowchart of the '5C generation program executed by the CPU 3.
DO1, MD23, MD45. The lower 2 bits of MnB2 are checked in steps 5O134, S8, and S12, and when the lower 2 bits are 00 indicating addition, the operation code of the preceding module is set to "OO" and the operation code of the following module is set to "00". (Sl
, 35. As can be seen from S9.513), FIGS. 4 and 8, in the case of this combination of operation codes, the waveform generation circuit 15 executes the addition of the two modules. When the lower 2 bits are Ol indicating the phase, the operation code of the preceding module is "oo" and the operation code of the following module is "AO" (S2) S6.310.314), so that the waveform generation circuit At step 15, the output of the preceding module is selected as the phase of the succeeding module. When the lower two bits are one indicating ring modulation, “00” is generated as the operation code of the preceding module, and “88” is generated as the operation code of the succeeding module (S3, S
7. Sll, 315), which results in subsequent module i+
The envelope used in 1 is (El, 1+E1 sinω
lt), and ring modulation is performed.

There are 3 combinations of 2 modules, a total of 8 modules, and the lines are independent, so the total is 34 = 8
There is one combination.

As described above, in embodiment 1, the eight time-division waveform modules included in the waveform generation circuit 15 are surpassed as four pairs of modules, and the module relationship of each module pair (line) can be selected from the input device. .

In 凰星ッAspect 2, in addition to the requirements of Aspect 1, should the waveform output of the current line be (a) the phase input of the later module of the next line or a part thereof?

(b) Should it be a musical tone?

This allows you to select. By adding the above selection (a), it is possible to include a plurality of frequency elements in the phase input of the module, thereby making the generated musical tones richer.

The input device for aspect 2 is the 0 display section 2b shown in FIG.
-1' screen, information regarding each line (θ~3) includes the relationship between the two modules that make up the line (ADD: addition, PHASE: phase, RING: ring modulation) and the relationship with the next line. relationships can be selected. "ON" indicates that the output of the line is input to the next line, and "OFF" indicates that the output of the line is not input to the next line and is used as a musical tone. A line number is selected using the cursor key 2a-1, and line setting information is selected using the value key 2b-1.

FIG. 12 is a conceptual diagram of the waveform generation circuit 15 in the second embodiment. Two consecutive modules are combined into one arithmetic circuit (l
This embodiment is similar to embodiment 1 in that it can be viewed as a line), but differs in that the arithmetic output can be input to the next stage arithmetic circuit.

FIG. 13 shows the configuration of the arithmetic circuit LO in FIG. 12 and the arithmetic circuit L1 at the next stage.

Selection switch swt, sW2) in the arithmetic circuit LO
W3 and selection switches SW5 and S in the arithmetic circuit Ll.
W6. SW7 selects the module relationship within the line from among addition, phase, and ring modulation.0 selection switches SW4 and SW8 select whether the line output is input to the next line or as a musical tone. This is different from Embodiment 1 in that this is added.

Now, assuming that the selection switch SW4 is on the right in the arithmetic circuit LO, the output α0 of the arithmetic circuit LO is input to the next stage arithmetic circuit L1. The arithmetic circuit L1 includes switches SW5, SW6 . When SW7 is in the middle, bottom, and left, respectively, E3gin (ao) + Ezsin
When ω2 is up, down, or right, E3sin(αo+E2s
inω2t) middle, top, right, (E3+Ezsi
nω2t)-sjn(ao) calculation circuit H.

, i EH, 1s+n(ct--1)+E1ginωHt.

, i El , +s+n(a −-1+ El ginω
+t).

Figure 14 shows the operation on code and selection switch SW.
0 indicating the correspondence with the states of I to 8. For example, the output of the arithmetic circuit LO becomes Eo s+nω6 t+E1 sinω1t, which becomes the phase input of Ll, and the arithmetic circuit L+no module 3 outputs E3gin (Eoginωot+E+gin
ω+t). This is added to the output E2sinω2t of module 2 of the arithmetic circuit Ll. In detail, derived from FIGS. 3 and 4, the waveform EosKncaot generated in module 0 with 5CO="00" is 0C1
="80" causes temporary register 15-3 in FIG.
(RsEosinωot) and also 0C1
= “80”, the waveform E+ sinωl of module l
t is generated, and this waveform is added to the previous E6sinωot by 602="4OH" and stored in the temporary register 1.
5-3 (R=Eoginωot+E1 sr
nω1t), and the waveform E2ginω2t of module 2 is generated by 0C2="40", and 0C3="10".
”, the contents Eo of the temporary register 15-3 are
5inta o t+E15inttr 1t becomes the phase input of module 3, and its output is E3sin (E
oginωot+E1 ginω1 t), and due to 0C3="lO", the waveform E2si of module 2 becomes
nω2t is input to the accumulator 15-4 (Σ=E2s
inω2t), and although not shown in FIG. 14, the operation code of the primary module is 0C4="OO".
(see FIG. 16 described in Section 1), the output of module 3 is added to the waveform of module 2 and input to the accumulator 15-4 (Σ=Ezsinω2t+E
3gin (Eosinω@t+E1ginω+t))
*Figure 15 shows the waveform synthesis designation registers, MDOl, MD23, M, which are changed by the input device illustrated in Figure 11.
D45, MD67, the lower two bits indicate the relationship between modules in the line, as in aspect 1, and bit 2
indicates whether to input it as a phase to the next line or output it as a musical tone. The CPU 3 stores these waveform synthesis designation registers MDO1, MD23, MI)45. Generate the operation code for each module from MnB2, and
Transfer to C register 14.

FIG. 16 is a flowchart of the operation code generation program executed by the CPU 3. This will be explained using some examples.

E2 s+nω2 t+E3sin(Eo sinωo
The case where t+E1 ginω1 t) is output has been explained. In this case, MDO1= “04”, MD2
3="OOn. On the flow, T1.T2.T3
, T6, TO", 0C4="OO" are generated.

Next, E3srnCE2sinω2 t+E+Sin
Consider the case where ω+t+Eosinωot) is output.

In this case, MD01="04", MD23="01"
It is.

Depending on the flow, 0CO="00", 0C1="80",
0C2= “40”, 0C3= “lO”, 10,000C
4="00" is generated. (T1.T2)T3. T6
．． T33, T35), up to δC2.

It is the same as the first example, and in the next OO3, 1 phase human power x3 is W2+RwE2sinca2t+EIs4nω+t+
Eosrnωot enters, and the output W3 of module 3 is E3sin(E2ginω2t+E1ginω+t
3oginωot), which is input to the accumulator as shown by Σ=Σ+W3 by the next operation code 0C4="00".

Next, (E3+E2sinω2 t)+1n(E+
5inta+t+Eoginωot). In this case, MD01="04", MD23
= “02”, and the file “OO” is generated (TI, T
2. T3, T6, T33, T36), up to OO2 are the same as the previous example, and the output R (=E+sin ω+t+E6sin ωot) of the temporary register 15-3 is selected as the phase input x3 of the module 3 by 0C3="98". , as the envelope input, E3◆R'
(R' = W2-E2 sin ω2t) is selected, and module 3 is (E3+E2gin ω2t)gi
Output n(E1sinω2t+Eoginωat),
This is? 5C4 is input to the accumulator 15-4.

Next, E3 gin(E2 sinω2 t+E+
When outputting 5in (Eo srnωo t)),
Ml)01="05", MD23="01", so from the flow OCO~2="oo", "AO", "80",
OO3,4="70",00" is generated (TI, T
2°T4, T6. T33, T35), until OO2.

Same as the previous example, x3←R+W2 is executed in OO3, Σ←Σ+W3 is executed in OO4, W3=E3s
in(W2+R)MI E3gin(E2sinω2
t+E+ sjn(Eoginωot).

Next, (E3+E2sinω2t)sin(E+5i
n(Eosinωot))lt output t6 case t*, M
Since D O1 = -05" and MD23 = "02", from the flow, OCO ~ 2 = "00", "AO", '8
0”, OO3,4="98", "oo" are generated (
T1. T2) T4. T6, T33, T36), up to OO2 are the same as the previous example, and at OO3
After executing (Eogin (1) o t)), R'
4-W2 (42sin ω2t) and W3+(E
3+R')ginX3 and 0C4-t'Σ←Σ
Perform +W3, where W3-(E3+E2ginωz
t) sin(Elsin(Eosinωot)).

In the first three examples, the arithmetic circuit LO performs the addition, and in the latter two examples, the arithmetic circuit LO uses module 0 as the phase of module l. When the arithmetic circuit LO is ring modulated, MDO1=“06” and OCO~2=“O
On "88" becomes "80" (T4), X at QCO
o + ωot, X+ + ω1t in QC1, R4
-No (EosinXo-Eosinωot)te,
W I+-(E+ orderR)ginX 1, so W
l-1(El+Eo srnωo t) sinω! t
This is stored in R in OC2. After that, the arithmetic circuit Ll is specified in the same way as in the above example, and the previous R
(Contents of temporary register 15-3) are.

E3ainR+E2sinωzt Er5in (R+E2srnω2t) (E3+E2sinω2t)sinR used as either.

For example, Elsin(Essin(E3gin(El sinω)
1 t+Eoginωo t)+E2sinω2t)
+Es5inωit) When creating +E6sinω6t, JiMDO1="04", MD23="04", MD
45="04", MD67="00", OCO~7="00" as the desired code for operation from the flow,'
80", '4o", 90", "40", "90", "4
o”, “10” are generated (T1., T2) T3, T
6. T7゜T8, Tll, T12) T13, T16, T
17), OCO~7 represents the module number of the waveform module 15M as a subscript, and its contents are OCOΣ4-
W7+Σ, Xo 4-ωotQCI R+ ←
'No, X+ +ω+tQC2R2+wl +R+
, X2 ←ω2tQC3R34-W2 , X34
-R20C4Rs ”Ws +R3, XI ←ω4 million C5Rs ←Wa, Xs ←R4?5C6
R6←W5 +R5, x6 ←ω6tOC7Σ4-No
, X7 4-R6 and the accumulator 15 denoted by Σ
The final content of −4 is shown as Σ=W7416=E1sinXl+E6sinX6=EzsinR6+E6sinω6. Here, Rb = W5+Rs = Es s 1nXs +14 = Es5inR4+EnsinωatRa =13+
Ih = R3s 1nX3+W2 = EzsinR2+E2ginωztR2= W+
+R+ = Er 5inx1+W.

= E+ginωlt+EoginX.

= E+ginω+t◆E@sinω6t, so
The final output is Elsin(E5sin(E3gin(E1ginω+
t+Eoginωot)+E2sinω2t)
+Es5inωit) +EbsEntaot.

As described above, in aspect 2, it is possible to select either addition 1 phase or ring modulation for every two modules, and
It is possible to select whether to use the calculation result of two modules as the phase input (or part of the phase) of the module after the next two modules, or to output it as a musical tone. The waveform generation circuit 15 operates with a total of 8 modules, so 34 x 23
=648 combinations are possible.

[Effects of the Invention] As explained in detail above, the present invention is configured to independently input and specify the Joule operation mode for generating multiple time-division waveforms in the sound source, so it is possible for the user to create a musical sound synthesis method. Therefore, the musical tone synthesis ability of the sound source can be fully utilized. In addition, there is no need to confirm the selected method of musical tone synthesis, such as specifying the method of musical tone synthesis by inputting numerical values, and it is easy to understand.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an electronic musical instrument according to an embodiment of the present invention, FIG. 2 is a configuration diagram of a sound source LSI, FIG. 3 is a configuration diagram of a waveform generation circuit, and FIG. 4 is a diagram of an operation code and a waveform generation circuit. 5th FM is a configuration diagram of the input device in aspect 1, FIG. 6 is a line-by-line schematic diagram of the waveform generation circuit in aspect 1, and FIG. 7 is a schematic diagram of the first line.
FIG. 8 is a diagram showing the correspondence between the addition, phase, and ring relationships of two consecutive modules and operation codes; FIG. 9 is a diagram showing the waveform synthesis designation register set by the input device in FIG. 5; FIG. 10 11 is a flowchart for generating the operating code of the waveform generation circuit from the contents of the waveform synthesis designation register, FIG. 11 is a configuration diagram of the input device in aspect 2, and FIG. 12 is a line-by-line schematic diagram of the waveform generation circuit in aspect 2. , Fig. 13 is a schematic diagram of the first two lines in Fig. 12, Fig. 14 is a diagram showing the correspondence between the state of each selection switch in Fig. 13 and the operation code, and Fig. 15 is a diagram showing the input of Fig. 11. FIG. 16, which is a diagram showing the waveform synthesis designation register set by the device, is a flowchart for calculating the operation code of the waveform generation circuit from the contents of the waveform synthesis designation register shown in FIG. 15. 2a...Switch section, 2a-1...Cursor key, 2a-2...Value key, 3.
...CPU, 6...Sound source LSI, 15.
...Waveform generation circuit. Patent applicant: Casio Kei'r
t1X ---・'Xi 4-R 4X ---RR+Wi-1,Xi ←■1t7X -
---Xi ←R1Wi-+ 8X ---RWi-t, Xi 4-4g119
x----" ×14-R Ax----ri Xi -&-Wi-+X8--W
←(Ei?R) sin XiFigure 4Figure 5Figure 6 "-T Figure 7Figure 9Figure 10Figure 11Figure 12Figure 14Figure 15

Claims (2)

[Claims] (1) In an electronic musical instrument equipped with a sound source (6; 15) that synthesizes musical tones using a plurality of time-divided waveform generation modules, module mode specification information (MD01, 23, 45, 67
); and a processing means (3) that generates control information (@O@C0-7) for each waveform generation module from the module mode designation information and transfers it to the sound source. An electronic musical instrument characterized by having (2) In the electronic musical instrument according to claim 1, the input means is configured to input the output of the first waveform generation module as the relationship between two consecutive waveform generation modules; Select independently for each two modules whether to add it to the output, (b) use it as the phase input of the subsequent waveform generation module, or (c) use it as part of the envelope input of the subsequent waveform generation module. An electronic musical instrument featuring